Late Wednesday night and Thursday morning, officials conducted tests of 27 samples gathered from the property, Ms. Sunny said.
To support their charges, Kano officials conducted tests of the polio vaccine, saying it was adulterated with hormones and contaminants.
The Pentagon conducted tests of important elements of the proposed national missile defense system today, in preparation for another attempt to shoot down a target in space.
This past fall, a group of Polish scientists conducted tests of their own at the site and concluded that no train was buried there.
In the past several years, the military has conducted tests of the different components of the defensive shield, which is scheduled to include Patriot air defense batteries, antiballistic missiles launched from Navy ships and lasers mounted on planes.
The E.P.A. conducted tests of Mr. Daschle's office on Nov. 10 and on Nov. 15, in part to answer the question of whether the spores would stick to an object or become airborne again.
But Dr. James Wayman, who does biometric research at San Jose State University and conducted tests of the Inspass system when it was first developed, objects that the program never had enough money or promotion to be judged fairly.
For instance, over the summer the National Institute of Standards and Technology in Gaithersburg, Md., conducted tests of different materials present in the dorm to determine what it would take to ignite them, investigators said.
The Surveyor probes conducted tests of properties of the moon's surface, and were equipped with cameras that provided tens of thousands of images.
In removing Ms. Cabrera, Judge Nelson agreed with the recommendation of a linguist who had conducted tests of Ms. Cabrera and found her English skills lacking.
